HVAC companies in Frederick, MD 21704
14 HVAC companies, with local market data for this ZIP.
General contractors 58HVAC 14Roofing and exteriors 9Electricians 7Other construction trades 6Remodeling 5Carpentry, drywall and windows 3Fences and decks 3Flooring and tile 2Concrete and masonry 2Painting 1Garage doors 1Excavation and demolition 1
Area profitability, HVAC64 / 100Strong market, crowded field
Typical home value$645,000−0.5% in the past year
New homes permitted, 20251,168Frederick County
Homeowners82.0%6,136 households
Source: Zillow (home value and housing demand in the score), data through Sep 2026. Permits and households: U.S. Census Bureau.
Airtron Heating & Air ConditioningHVAC contractor · 5123 Pegasus Ct Suites K-N, Frederick(301) 696-0101 · airtron.com
American Air, LLCHVAC contractor · 8403 Eagles Nest Rd, Frederick(301) 676-9234 · americanair-llc.com
AmerilogicHVAC contractor · 5100 Buckeystown Pike, Frederick(301) 676-9234 · amerilogicllc.com
Atlas Home Energy SolutionsHVAC contractor · 5108 Pegasus Ct Ste A, Frederick(301) 364-5055 · atlashomeenergy.com · 8 drivers, 8 trucks
Commercial Energy SystemsHVAC contractor · 5744 Industry Ln, Frederick(301) 620-2202 · commercialenergysystems.com
Holtzople Heating & Air ConditioningHVAC contractor · 5104 Pegasus Ct, Frederick(855) 970-2727 · holtzople.com
Larry & Sons Plumbing, Heating, Cooling, Drain & ElectricalHVAC contractor · 5744 Industry Lane Ste N, Frederick(301) 857-4463 · larryandsons.com
Reclamation Technologies USA, LLC - RTIHVAC contractor · 1539 Tilco Dr, Frederick(301) 898-0808 · criticalpowerusa.com
Smock Heating & AirHVAC contractor · 1539 Tilco Dr Unit 104, Frederick(301) 945-7220 · smockhvac.com
United Air TempHVAC contractor · 5732 Industry Ln, Frederick(240) 680-9304 · unitedairtemp.com
Urbana HVACHVAC contractor · 9309 Penrose St, Frederick(240) 723-3860 · urbanahvac.com
Weather Masters Corp.HVAC contractor · 4509 Metropolitan Ct Unit D, Frederick(240) 215-3339 · weathermasterscorp.com
Wyant Heating & AirHVAC contractor · 1573 Tilco Dr, Frederick(301) 620-1770 · wyantheatingandair.com
LiveWrench Heating & AirHVAC contractor · 7138 English Muffin Way Ste B, Frederick(301) 304-3035
HVAC in ZIP 21704 at a glance
Local building angle: Frederick County permitted 1,168 new homes in 2025, including 354 apartment units. 75% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.